diff --git a/src/telemetry/Counter.cc b/src/telemetry/Counter.cc
index 5abb624f20..8b34624254 100644
--- a/src/telemetry/Counter.cc
+++ b/src/telemetry/Counter.cc
@@ -5,7 +5,7 @@ using namespace zeek::telemetry;
 Counter::Counter(FamilyType* family, const prometheus::Labels& labels, prometheus::CollectCallbackPtr callback) noexcept
     : handle(family->Add(labels)), labels(labels) {
     if ( callback ) {
-        handle.AddCollectCallback(callback);
+        handle.AddCollectCallback(std::move(callback));
         has_callback = true;
     }
 }
@@ -37,5 +37,5 @@ std::shared_ptr<Counter> CounterFamily::GetOrAdd(Span<const LabelView> labels,
 
 std::shared_ptr<Counter> CounterFamily::GetOrAdd(std::initializer_list<LabelView> labels,
                                                  prometheus::CollectCallbackPtr callback) {
-    return GetOrAdd(Span{labels.begin(), labels.size()}, callback);
+    return GetOrAdd(Span{labels.begin(), labels.size()}, std::move(callback));
 }
diff --git a/src/telemetry/Gauge.cc b/src/telemetry/Gauge.cc
index f3f510b436..273c9a57bf 100644
--- a/src/telemetry/Gauge.cc
+++ b/src/telemetry/Gauge.cc
@@ -17,7 +17,7 @@ double Gauge::Value() const noexcept {
 Gauge::Gauge(FamilyType* family, const prometheus::Labels& labels, prometheus::CollectCallbackPtr callback) noexcept
     : handle(family->Add(labels)), labels(labels) {
     if ( callback ) {
-        handle.AddCollectCallback(callback);
+        handle.AddCollectCallback(std::move(callback));
         has_callback = true;
     }
 }
@@ -37,5 +37,5 @@ std::shared_ptr<Gauge> GaugeFamily::GetOrAdd(Span<const LabelView> labels, prome
 
 std::shared_ptr<Gauge> GaugeFamily::GetOrAdd(std::initializer_list<LabelView> labels,
                                              prometheus::CollectCallbackPtr callback) {
-    return GetOrAdd(Span{labels.begin(), labels.size()}, callback);
+    return GetOrAdd(Span{labels.begin(), labels.size()}, std::move(callback));
 }
diff --git a/src/telemetry/Manager.cc b/src/telemetry/Manager.cc
index 888c8bad38..0fedde48e0 100644
--- a/src/telemetry/Manager.cc
+++ b/src/telemetry/Manager.cc
@@ -265,10 +265,10 @@ ValPtr Manager::CollectMetrics(std::string_view prefix_pattern, std::string_view
                 label_values_vec->Append(make_intrusive<StringVal>(lbl.value));
             }
 
-            r->Assign(label_names_idx, label_names_vec);
-            r->Assign(label_values_idx, label_values_vec);
+            r->Assign(label_names_idx, std::move(label_names_vec));
+            r->Assign(label_values_idx, std::move(label_values_vec));
 
-            ret_val->Append(r);
+            ret_val->Append(std::move(r));
         }
     }
 
@@ -285,7 +285,7 @@ ValPtr Manager::CollectMetrics(std::string_view prefix_pattern, std::string_view
         }
     }
 
-    return ret_val;
+    return std::move(ret_val);
 }
 
 ValPtr Manager::CollectHistogramMetrics(std::string_view prefix_pattern, std::string_view name_pattern) {
@@ -337,8 +337,8 @@ ValPtr Manager::CollectHistogramMetrics(std::string_view prefix_pattern, std::st
                 label_values_vec->Append(make_intrusive<StringVal>(lbl.value));
             }
 
-            r->Assign(label_names_idx, label_names_vec);
-            r->Assign(label_values_idx, label_values_vec);
+            r->Assign(label_names_idx, std::move(label_names_vec));
+            r->Assign(label_values_idx, std::move(label_values_vec));
 
             auto double_values_vec = make_intrusive<zeek::VectorVal>(double_vec_type);
             std::vector<double> boundaries;
@@ -361,9 +361,9 @@ ValPtr Manager::CollectHistogramMetrics(std::string_view prefix_pattern, std::st
             r->Assign(sum_idx, zeek::make_intrusive<DoubleVal>(inst.histogram.sample_sum));
 
             RecordValPtr local_opts_record = r->GetField<RecordVal>(opts_idx);
-            local_opts_record->Assign(bounds_idx, bounds_vec);
+            local_opts_record->Assign(bounds_idx, std::move(bounds_vec));
 
-            ret_val->Append(r);
+            ret_val->Append(std::move(r));
         }
     }
 
@@ -380,7 +380,7 @@ ValPtr Manager::CollectHistogramMetrics(std::string_view prefix_pattern, std::st
         }
     }
 
-    return ret_val;
+    return std::move(ret_val);
 }
 
 void Manager::BuildClusterJson() {
@@ -488,7 +488,7 @@ GaugePtr Manager::GaugeInstance(std::string_view prefix, std::string_view name,
                                 std::string_view helptext, std::string_view unit,
                                 prometheus::CollectCallbackPtr callback) {
     auto lbl_span = Span{labels.begin(), labels.size()};
-    return GaugeInstance(prefix, name, lbl_span, helptext, unit, callback);
+    return GaugeInstance(prefix, name, lbl_span, helptext, unit, std::move(callback));
 }
 
 HistogramFamilyPtr Manager::HistogramFamily(std::string_view prefix, std::string_view name,